Reactive Power Balance and Control Methods in HVDC Transmission System

doi:10.3969/j.issn.1000-7229.2015.09.006

Abstract

Abstract:

The reactive power balance and control strategies in three typical HVDC transmission system (UHVDC, EHVDC, BTBHVDC) were comprehensively analyzed and researched. First of all, the electric equipment and influence factors related to reactive power in HVDC transmission system were introduced. Furthermore, the existing reactive power control strategies of HVDC projects were summarized and the concept of reactive power control factor was proposed. Moreover, based on the relationships between voltage fluctuation and reactive power in AC system, the simplified scheme was presented, in which AC voltage was converted into reactive power, and the intersection of transformed reactive power and AC system reactive power was taken as control factor. Finally, the computation results of the proposed method for reactive power were compared with the operating results of actual projects. The experimental results verify the effectiveness of the reactive power model in the proposed scheme.

Key words: HVDC transmission, reactive power equipment, reactive power balance, reactive power control

CLC Number:

TM 744

ZHU Kunlin, WEN Boying . Reactive Power Balance and Control Methods in HVDC Transmission System[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(9): 35-42.

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